I just re-created the bug:
1) made a new female merchant character
2) cheated her to lvl 4 and 10000 gold
3) hired 14 troops and 14 soldiers (the max with 9 cha and 3 leadership)
4) went to the vendor in Zendar and bought blunt weapons, shield, gloves and light armor, all lvl 1
5) told the vendor to equip the items
6) got out of Zendar, talked to the soldiers, ignored the melee_weapons assertion and told the soldiers to equip the items
7) re-entered Zendar and bought blunt weapons lvl 2; un-equipped and re-equipped the troops without problems

out of Zendar, talked to the soldiers, un-equipped the blunt weapons and *poof!* they're gone!
These are the EXACT steps I took, hope it helps.
Great mod, btw!